CVE-2025-66461

CVSS 8.4 HIGHEPSS 0.1%CWE-428

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.4EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

08 Dec 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

FULLBACK Manager Pro provided by GS Yuasa International Ltd. registers two Windows services with unquoted file paths. A user may execute arbitrary code with SYSTEM privilege if he/she has the write permission on the path to the directory where the affected product is installed.

CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

GS Yuasa International Ltd. · FULLBACK Manager Pro for Network (for Windows)GS Yuasa International Ltd. · FULLBACK Manager Pro (for Windows)

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References

https://jvn.jp/en/jp/JVN59242986/https://ps.gs-yuasa.com/technicalinfo/pdf/failure/FMP_info20251201_TEX48214-993.pdf